QCA6391: failed to get 32 MSI vectors, only 1 available

[Kalle Valo]

Devin Bayer <dev at doubly.so> writes:

> I am trying to get a QCA6391 card to work with the ath11k driver. It
> recognizes the card since it has the same device ID as the QCA6390.
> However it fails to initialize:
>
>> [    4.241127] ath11k_pci 0000:03:00.0: WARNING: ath11k PCI support is experimental!
>> [ 4.258806] ath11k_pci 0000:03:00.0: BAR 0: assigned [mem
>> 0xd0000000-0xd0ffffff 64bit]
>> [    4.258838] ath11k_pci 0000:03:00.0: enabling device (0000 -> 0002)
>> [ 4.258987] ath11k_pci 0000:03:00.0: failed to get 32 MSI vectors,
>> only 1 available
>> [    4.258990] ath11k_pci 0000:03:00.0: failed to enable msi: -22
>
> I've tried a few different kernel versions up to 5.10-rc2 and they all behave the same.
>
> Does anyone know if there is anything I can do to get this to work?

There's a similar thread ongoing:

http://lists.infradead.org/pipermail/ath11k/2020-October/000467.html

For me CONFIG_IRQ_REMAP helped, but it didn't help for Thomas. I suggest
to try that first anyway. I'll also include you to the other thread.

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